File:Langmuir mercury diffusion pump.jpg
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![File:Langmuir mercury diffusion pump.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/1/15/Langmuir_mercury_diffusion_pump.jpg/517px-Langmuir_mercury_diffusion_pump.jpg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 12:16, 27 August 2013 | ![]() | 1,224 × 1,420 (257 KB) | commons>Chetvorno | {{Information |Description ={{en|1=Mercury diffusion pump invented by en:Irving Langmuir at en:General Electric in 1916. The diffusion pump is the vertical chamber in the foreground, the machine in the background ... |
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